examples/metro-2012-08-31.sudoku


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0 7 0  9 8 5  0 0 0
0 0 1  0 4 0  0 7 0
0 3 0  0 0 0  6 0 0

0 0 0  0 5 7  0 6 9
5 0 2  4 0 0  0 0 0
7 0 6  3 0 8  2 5 0

2 1 0  0 0 0  4 0 0
3 5 0  0 0 0  0 9 0
0 6 0  8 0 2  0 0 3